| Abstract |
The increasing of rooftop solar photovoltaic (PV) in residential building can help to gain the portion of clean energy generation in power network. However, electricity energy from solar PV is available only in daylight and its output power depends on solar radiation intensity. Where, these characteristics of solar PV cause to negative impacts on village network such as load factor decrease and overvoltage and, in many researches, an energy storage system is essentially required to deal with these problems. Accordingly, the energy storage management system for mitigating the impacts from high penetration of rooftop solar PVs in a village network is proposed in this study. The aim of this paper is to optimize the size, operation and location of battery energy storage system (BESS). In addition, the objective function is to maximize economic benefit from the investment of BESS that includes battery price arbitrage, peak demand reduction, energy losses reduction and carbon emission reduction, while system load factor improvement is considered. The newly optimal power flow techniques developed by using the following control method of load factor correction curve combination with energy price arbitrage pattern. First, the size and operation of BESS are optimized by using genetic algorithm (GA) and then its optimal location is finding by using search method. To verify the effectiveness of the proposed system, a case study of real village network in Udon Thani, Thailand is selected. The proposed approach has been developed and simulated in MATLAB. By using this methodology, the numerical results show that load factor of village network with high penetration of solar PVs is improved and reach to a desired value, that is not lower than the load factor in the case without solar PV integration in the network. In addition, economic benefit which is a net present value (NPV) of BESS investment is maximized. Furthermore, network energy losses are decreased during the peak load time, and all buses voltages operate within theirs limits. |
Publication
Journal Publication
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